diff --git a/.gitignore b/.gitignore
index 63e0d84..ab15e3f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@
 pkg/
 *.gem
 coverage/
-spec/log/*.log
\ No newline at end of file
+spec/log/*.log
+gemfiles/*.lock
diff --git a/.travis.yml b/.travis.yml
index 37d25b9..8d0c4b0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,10 @@ rvm:
   - "2.2.8"
   - "2.3.5"
   - "2.4.2"
+gemfile:
+  - gemfiles/http2.gemfile
+  - gemfiles/http3.gemfile
+  - gemfiles/http4.gemfile
 # uncomment this line if your project needs to run something other than `rake`:
 script: bundle exec rspec spec
 # workaround for https://github.com/travis-ci/travis-ci/issues/5239:
diff --git a/gemfiles/http2.gemfile b/gemfiles/http2.gemfile
new file mode 100644
index 0000000..fcf14ad
--- /dev/null
+++ b/gemfiles/http2.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem "http", "~> 2.0"
+
+gemspec path: ".."
diff --git a/gemfiles/http3.gemfile b/gemfiles/http3.gemfile
new file mode 100644
index 0000000..e6b7732
--- /dev/null
+++ b/gemfiles/http3.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem "http", "~> 3.0"
+
+gemspec path: ".."
diff --git a/gemfiles/http4.gemfile b/gemfiles/http4.gemfile
new file mode 100644
index 0000000..db34094
--- /dev/null
+++ b/gemfiles/http4.gemfile
@@ -0,0 +1,5 @@
+source "https://rubygems.org"
+
+gem "http", github: "httprb/http"
+
+gemspec path: ".."
diff --git a/lib/httplog/adapters/http.rb b/lib/httplog/adapters/http.rb
index 9b1f6ea..ce8e3d0 100644
--- a/lib/httplog/adapters/http.rb
+++ b/lib/httplog/adapters/http.rb
@@ -14,7 +14,15 @@ class Client
         if log_enabled
           HttpLog.log_request(req.verb, req.uri)
           HttpLog.log_headers(req.headers.to_h)
-          HttpLog.log_data(req.body) #if req.verb == :post
+
+          if defined?(::HTTP::Request::Body)
+            body = req.body.respond_to?(:source) ? req.body.source : req.body.instance_variable_get(:@body)
+          else
+            body = req.body
+          end
+
+          HttpLog.log_data(body.to_s)
+          body.rewind if body.respond_to?(:rewind)
         end
 
         bm = Benchmark.realtime do